The Australian Geoscience Data Cube (Digital Earth ...
Transcript of The Australian Geoscience Data Cube (Digital Earth ...
![Page 1: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/1.jpg)
The Australian Geoscience Data Cube (Digital Earth
Australia) :
A data analysis environment for satellite and other earth
observations
….
Dr. Adam Lewis,
Branch Head, National Marine and Earth Observations,
Geoscience Australia
![Page 2: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/2.jpg)
Outline
• Digital Earth Australia / Data Cube
• Water Observations from Space (WOfS)
• Water colour, water quality
• Surface water observations used for groundwater studies
• Quantifying water: Linking satellite observations to hydrographs to enable
better water models and forecasts
• Conclusion : remote measurements add powerful new capabilities to the
‘Water Tools’ that we have at our disposal.
![Page 3: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/3.jpg)
Digital Earth Australia
![Page 4: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/4.jpg)
Digital Earth Australia – Why?
“Earth Observations from space (EOS) are the single
most important and richest source of environmental
information for Australia.”
An Australian Strategic Plan for Earth Observations
from Space, 2009
![Page 5: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/5.jpg)
Digital Earth Australia – Why?
The Australian Government is currently spending over
$2 billion on monitoring, protecting or improving the
health of our natural resources
Australia’s spatial industry is forecast to generate
15,000 new jobs and contribute over $8 billion per
annum to Australia’s economy by 2025
![Page 6: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/6.jpg)
The Data Cube concept
![Page 7: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/7.jpg)
Ensure that Australia’s Government and Industry
are able to effectively use Earth observation data
![Page 8: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/8.jpg)
Ensure that Australia’s Government and Industry
are able to effectively use Earth observation data
![Page 9: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/9.jpg)
DEA unlocks ‘big data from space’Big, new, data from satellites is being harnessed and will make major
contributions going forward
Big data is like transitioning from a still picture, to a movie
![Page 10: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/10.jpg)
Water Observations from Space (WoFS)
![Page 11: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/11.jpg)
![Page 12: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/12.jpg)
Continental ScaleWater Observations from Space
![Page 13: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/13.jpg)
Surface water patterns indicating structureWilcannia, NSW, Australia. Fault-controlled flow linked to groundwater systems
![Page 14: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/14.jpg)
Surface water patterns indicating structureLake Blanche, Strzelecki Regional Reserve, SA
![Page 16: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/16.jpg)
Water mapping methods can be globalisedWOfS algorithm applied to
Lake Baringo National Park,
Kenya(Brian Killough, NASA / CEOS
Systems Engineering Office)
![Page 17: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/17.jpg)
Water QualityMeasures of water quality can be applied
over mapped water bodies
Total Suspended Matter (TSM) can be
measured for a wide range of water bodies
over large areas.
TSM is a surrogate for other water quality
measures.
The potential: to dramatically improve water
quality monitoring and reporting.
![Page 18: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/18.jpg)
![Page 19: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/19.jpg)
Local ScaleWater Quality Monitoring: Lake Burley Griffin
![Page 20: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/20.jpg)
![Page 21: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/21.jpg)
Water QualityMeasures of water quality can be applied
over mapped water bodies
Total Suspended Matter (TSM) can be
measured for a wide range of water bodies
over large areas.
TSM is a surrogate for other water quality
measures.
The potential: to dramatically improve water
quality monitoring and reporting.
![Page 22: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/22.jpg)
Ecosystem responses• Vegetation greenness is strongly linked to the availability of water and is
easily measured from satellites using the NDVI index.
• Greenness changes due to …
• Drought
• Surface-groundwater connections
• Modification of flow regimes
• Use of stored water
![Page 23: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/23.jpg)
V
![Page 24: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/24.jpg)
Greenness can be measured through time
Trend through the 25th percentile values within each ‘water year’
Slope (-ve) of the regression indicates drying over time
![Page 25: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/25.jpg)
Wet-green vegetation measures are used to highlight
groundwater-surface water connections
30 years of data
3 million km2
![Page 26: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/26.jpg)
Linking to Quantitative Water Data• The science exists to link remote
measurements to water quantity
(e.g., surface water storage)
• However, very coarse scale data,
and (possibly?) used in isolation
• With DEA we can apply these types
of methods:
• At much higher resolution
• Using dense time-series
• Linked with other water tools
• Routinely
![Page 27: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/27.jpg)
Quantitative data on surface water coverage
Lake Pamamaroo, NSW
![Page 28: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/28.jpg)
Images captured through the hydrographic history
Diamantina river.
Discharge values
measured since
1965.
Satellite images
captured since
~1987 sample the
discharge history.
![Page 29: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/29.jpg)
![Page 30: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/30.jpg)
![Page 31: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/31.jpg)
![Page 32: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/32.jpg)
![Page 33: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/33.jpg)
More than just visualisation
Diamantina river.
Satellite images
are captured for
almost the full
range of the flow
duration curve
![Page 34: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/34.jpg)
Water Classifier (Water Observations from Space)
![Page 35: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/35.jpg)
0-3%
20-30%
0-10%
10-20%
![Page 36: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/36.jpg)
More than just visualisation
Diamantina river.
Satellite images
are captured for
almost the full
range of the flow
duration curve
Areas of water
can be linked to
discharge rates
![Page 37: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/37.jpg)
ConclusionsDEA is showing that remote measurements from Earth observing satellites are a rich
source of water information.
• The data are free, open, and improving, thanks to US and European policies which
focus on the value of the data
• ‘Data Cubes’, including the open-source Open Data Cube (ODC) are providing
technical tools to manage these very large (and growing daily) amounts of “Analysis
Ready Data”.
• Remote measurements can be linked to in-situ measurements, hydrographs and
models to improve quantitative estimates and models of water quantity
• Used as part of an integrated set of water tools, new and better approaches are
possible to assess water resources, design management strategies, measure the
effectiveness of policy, and communicate with stakeholders.
![Page 38: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/38.jpg)
Ensure that Australia’s Government and Industry
are able to effectively use Earth observation data
ga.gov.au/dea
eos.ga.gov.au (demonstrations of products)
opendatacube.org (open source community)
![Page 39: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/39.jpg)
Additional material
![Page 40: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/40.jpg)
Traditional remote sensing process
![Page 41: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/41.jpg)
The problem replicates with each new satellite
![Page 42: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/42.jpg)
Traditional remote sensing process
![Page 43: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/43.jpg)
Beyond Australia – CEOS / NASA NASA are working with Geoscience Australia using version-1 of the Data Cube
![Page 44: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/44.jpg)
Beyond Australia – CEOS / NASA Projects area focussing on Kenya and Colombia
![Page 45: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/45.jpg)
Beyond Australia – CEOS / NASA The approach is to build tools to enable remote sensing experts to overcome
the practical technical barriers that they face
![Page 46: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/46.jpg)
Beyond Australia – CEOS / NASA The tools include water detection, and vegetation change detection
![Page 47: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/47.jpg)
Beyond Australia – CEOS / NASA NASA are seeking new collaborations and support through SERVIR and
amazon
![Page 48: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/48.jpg)
Linked groundwater / surface water studies
![Page 49: The Australian Geoscience Data Cube (Digital Earth ...](https://reader033.fdocuments.in/reader033/viewer/2022060710/62977892a6422a424032db90/html5/thumbnails/49.jpg)
Water quality- additional material
Satellites measure parts of the spectrum that
differentiate turbidity among water bodies (top
figure).
Empirical relationships with in-situ measured
Total Suspended Matter (TSM) are good
(lower figure).
Remote measures are ubiquitous, regular,
affordable, and available (from mid-1980s for
most places, based on the USGS’ Landsat
program).
Lymburner et al., Remote Sensing of Environment
(2016), http://dx.doi.org/10.1016/j.rse.2016.04.011